- Lenovo 3269-B5U (desktop/workstation)
- Intel Core i5 CPU
- Intel HD Graphics
- Win XP Pro
- 2 identical 17" LCD monitors (ACER V173): one VGA, one DP (via DP-to-VGA adapter)
On reboot the VGA monitor remains off, no signal. The DP monitor shows the BIOS and Windows splash screen, but once you get to the blue backgrounds leading up to login, the DP monitor also goes blank, but not off. There's still signal going to this monitor but it is black/blank. There is a very thin white bar at the very top of the screen against the bezel that flashes, which may be a signal from the computer or may be a screen issue.
My workaround involves power cycling the computer and getting into safe mode (which works, displaying on the DP monitor), deleting the Display Adapter from Device Manager, and rebooting. On reboot the DP monitor works OK and allows login to windows and I receive the prompt to select a driver for the video card which I then install. Opening the Display Properties I then see the VGA monitor is enabled and the DP monitor is disabled, but I'm viewing this on the DP monitor. Pressing OK or Apply switches to the VGA display and then I'm able to enable the DP monitor and get everything working.
Rebooting the computer again, though, gets right back to the same issue.
I have updated to the latest BIOS and installed the latest video drivers from Intel (dated 9/10/2011). The closest thing to a display management software package I use besides XP's default display manager is Wallpaper Changer power toy for Windows XP.
The issue really began in earnest two days ago, before then it had occured only once in a while.
I changed jobs and no longer work with Lenovo systems, nor have I experienced this issue on any of my current systems.
As such, I'll never be able to tell whether or not a suggestion or solution resolves the issue. I will petition for the question to be closed.